"The Authoritative Bibliographic Database of Biomedical and Health Journals
Created by the United States National Library of Medicine, MEDLINE is an authoritative bibliographic database containing citations and abstracts for biomedical and health journals used by health care professionals, nurses, clinicians and researchers.
Powerful and Easy-to-Use Search
MEDLINE provides an easy-to-use interface and powerful search functionality including basic and advanced search options. Users can effectively search and retrieve information with Medical Subject Headings (MeSH) created by the United States National Library of Medicine." (From the vendor)